EP0487856A2 - Procédé pour la fabrication de fente ou d'éponge de fer - Google Patents

Procédé pour la fabrication de fente ou d'éponge de fer Download PDF

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Publication number
EP0487856A2
EP0487856A2 EP91116487A EP91116487A EP0487856A2 EP 0487856 A2 EP0487856 A2 EP 0487856A2 EP 91116487 A EP91116487 A EP 91116487A EP 91116487 A EP91116487 A EP 91116487A EP 0487856 A2 EP0487856 A2 EP 0487856A2
Authority
EP
European Patent Office
Prior art keywords
gas
iron
reduction shaft
heat exchanger
shaft furnace
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP91116487A
Other languages
German (de)
English (en)
Other versions
EP0487856A3 (en
EP0487856B1 (fr
Inventor
Rolf Dipl.-Ing. Dr. Hauk
Leopold Werner Dipl.-Ing. Dr. Kepplinger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Primetals Technologies Austria GmbH
Deutsche Voest Alpine Industrieanlagenbau GmbH
Original Assignee
Voest Alpine Industrienlagenbau GmbH
Deutsche Voest Alpine Industrieanlagenbau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voest Alpine Industrienlagenbau GmbH, Deutsche Voest Alpine Industrieanlagenbau GmbH filed Critical Voest Alpine Industrienlagenbau GmbH
Publication of EP0487856A2 publication Critical patent/EP0487856A2/fr
Publication of EP0487856A3 publication Critical patent/EP0487856A3/de
Application granted granted Critical
Publication of EP0487856B1 publication Critical patent/EP0487856B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
    • C21B13/143—Injection of partially reduced ore into a molten bath
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0073—Selection or treatment of the reducing gases
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/30—Arrangements for extraction or collection of waste gases; Hoods therefor
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/40—Gas purification of exhaust gases to be recirculated or used in other metallurgical processes
    • C21B2100/44—Removing particles, e.g. by scrubbing, dedusting
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/60—Process control or energy utilisation in the manufacture of iron or steel
    • C21B2100/66—Heat exchange
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/80—Interaction of exhaust gases produced during the manufacture of iron or steel with other processes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/122—Reduction of greenhouse gas [GHG] emissions by capturing or storing CO2
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/134—Reduction of greenhouse gas [GHG] emissions by avoiding CO2, e.g. using hydrogen

Definitions

  • the invention relates to a process for producing pig iron, in which iron ore is reduced in a reduction shaft furnace and the iron sponge obtained in this way is subsequently melted in a melter gasifier, a carbon carrier and an oxidizing gas being introduced into the melter gasifier and the gas generated in the melter gasifier as the reducing gas in the Reduction shaft furnace can be directed.
  • From DE-PS 28 43 303 is a process for the production of molten pig iron and reducing gas in a smelting gasifier, in which sponge iron particles are melted into molten pig iron or steel raw material, and from supplied coal and oxygen-containing gas blown in above the melt, the heat and reducing gas required for melting are known.
  • a relatively large amount of excess gas (export gas) is produced and the energy consumption, that is to say the consumption of coal and oxygen, is still very high. If the excess gas cannot be used economically, the production costs for the pig iron are very high.
  • the chemical energy in the excess gas is more than 50% of the energy supplied with the coal and the utilization of the reduction gas generated in the melter gasifier is a maximum of 44%.
  • a similar method for producing iron sponges is known from US Pat. No. 4,260,412. This also uses blast furnace gas from a reduction shaft furnace, which has been prepared by removing carbon dioxide, to produce the fresh reduction gas.
  • a fluidized bed gasifier serves as the gas generator, to which the processed blast furnace gas, coal and lime as well as oxygen and possibly water vapor are fed.
  • the processed blast furnace gas is mixed with the starting gas of this gasifier directly and via a gas heater before it is fed into the reduction shaft furnace. This process also works without a melter gasifier for the production of pig iron.
  • This object is achieved in that the preheated top gas, which has been cleaned of oxidizing constituents, is brought to a reductone temperature of 750 to 850 ° C. by partial combustion with the addition of oxygen.
  • inhibitors are added to the cleaned top gas before entering the heat exchanger, which are used as S0 2 , H 2 S, NH 3 , (CN) 2 , N0 2 or CL 2 individually or in combination.
  • the cleaned blast furnace gas can be added to cooled gasifier gas before it enters the heat exchanger.
  • the partial combustion is carried out in a fluidized bed or moving bed reactor, the reactor being operated on the basis of ceramic particles which are regeneratively heated by partial gas combustion.
  • the partial gas used is obtained in the C0 2 wash.
  • a special embodiment of the invention provides that the top gas which has been cleaned and preheated from oxidizing constituents is at least partially introduced into a further reduction shaft furnace (15) via the melter gasifier (2).
  • the plant contains a reduction shaft furnace 1 designed in a known manner, to which iron ore and additives are fed from above via an inlet (not shown).
  • the meltdown gasifier 2 is arranged under the reduction shaft furnace 1 and takes up the sponge iron produced by the reduction of the iron ore via line 3, from which a pig iron melt is formed.
  • coal and oxygen are fed to the melter gasifier 2.
  • the reduction shaft furnace 1 is supplied with reduction gas from the melter gasifier 2 via a line 4.
  • the blast furnace furnace blast furnace gas 1 is fed via line 5 into the scrubber 6, where it is cleaned of dust and water vapor (FIG. 1).
  • the gas passes through line 7 into the C0 2 scrubber 8, which can also be designed as a pressure swing absorption (PSA) system.
  • PSA pressure swing absorption
  • the C0 2 -rich residual gas is discharged for further use via line 9 and the reducing gas for heating is fed via line 10 into the heat exchanger 11.
  • the gas passes via line 12 into the partial combustion system 13, from where it is brought into the reduction shaft furnace 15 from below via line 14.
  • the gas leaving the CO 2 scrubber 8 via line 10 has a residual CO 2 content of 2% and a temperature of 30 ° to 60 ° C. This gas cannot be heated to the reduction temperature in one stage via the heat exchanger 11, since the area of CO decomposition which has a maximum at about 550 ° to 600 ° C. is passed through here.
  • the blast furnace gas is only heated in the heat exchanger 11 up to a temperature of approximately 200 to 500.degree. Further heating to the reduction temperature is achieved by the partial combustion system 13 by means of oxygen fed into the gas tower.
  • the required quantity of reducing gas per ton of ore increases by reducing the preheating temperature from 500 ° to 400 ° C by 80 Nm 3 / t ore (from 1340 to 1260 Nm 3 / t ore).
  • inhibitors are added to the gas before entering the heat exchanger, which at the same time suppresses the CO decomposition.
  • S0 2 , H 2 S, NH 3 , (CN) 2 , N0 2 or CL 2 are used as inhibitors.
  • the partial combustion can be carried out in a fluidized bed or moving bed reactor, the reactor being operated on the basis of ceramic particles heated regeneratively by partial gas combustion, as can be seen in more detail in FIG. 2.
  • the partial gas can originate from the C0 2 scrubber 8 or preferably the pressure swing absorption system PSA.
  • the ceramic particles are heated to approximately 900 ° C., and deposited carbon is also burned.
  • the ceramic particles heated in this way are conveyed into the heat exchanger 19 via the line 25 and give off their heat to the gas flowing into the heat exchanger 19 via the line 10.
  • the gas heated in this way flows via line 14 into the reduction shaft 15.
  • the cooled ceramic particles pass via line 20 to a conveying station 21 and are conveyed from there with the addition of a conveying medium into the regenerator 18, where they are heated again.
  • Preheating the gas in the fluidized bed reactor 19 to 750 to 800 ° C. is sufficient, since the reduction shaft furnace 15 does not have too calcine surcharges. It is advantageous here that weak gas, for example residual gas, can be used and that the gas quality hardly deteriorates during the heating.
  • weak gas for example residual gas
  • the C0 2 washer 8 is connected on the one hand via line 26 to the melter gasifier 2 and on the other hand via line 9 to the line 4 between the melter gasifier 2 and the reduction shaft furnace 1 (FIG. 3).
  • the second reduction shaft furnace 15 is supplied with preheated reduction gas from the melter 2 via a line 27.
  • the blast furnace gas produced there arrives with the blast furnace 1 blast furnace gas via line 5 into the C0 2 scrubber 8.
  • Partial combustion is not necessary here, since the cleaned blast furnace gas is partly heated in the melter 2 to the temperature of approx. 800 ° to 850 ° C is heated. The scope of the plant would consequently be reduced, but the largest part would be used to cool the approx. 1050 0 hot gasification gas.
  • FIG. 4 Another variant of the top gas recirculation is shown in Fig. 4, in which the C0 2 removal is omitted.
  • the top gas is again fed via line 5 from the reduction shaft furnace 1 to a dust washer 6, in order to remove part of it as export gas and return part of it as recycling gas to the melter gasifier 2 via a compressor 27, with the interposition of a heater 13

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacture Of Iron (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Catalysts (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Furnace Details (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Hydrogen, Water And Hydrids (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
EP91116487A 1990-11-29 1991-09-26 Procédé pour la fabrication de fente ou d'éponge de fer Expired - Lifetime EP0487856B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4037977 1990-11-29
DE4037977A DE4037977A1 (de) 1990-11-29 1990-11-29 Verfahren zur herstellung von roheisen bzw. eisenschwamm

Publications (3)

Publication Number Publication Date
EP0487856A2 true EP0487856A2 (fr) 1992-06-03
EP0487856A3 EP0487856A3 (en) 1993-02-03
EP0487856B1 EP0487856B1 (fr) 1996-11-20

Family

ID=6419151

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91116487A Expired - Lifetime EP0487856B1 (fr) 1990-11-29 1991-09-26 Procédé pour la fabrication de fente ou d'éponge de fer

Country Status (16)

Country Link
US (1) US5238487A (fr)
EP (1) EP0487856B1 (fr)
JP (1) JP2635256B2 (fr)
KR (1) KR0140516B1 (fr)
AT (1) ATE145432T1 (fr)
AU (2) AU8584191A (fr)
BR (1) BR9105177A (fr)
CA (1) CA2052659C (fr)
CZ (1) CZ278732B6 (fr)
DE (2) DE4037977A1 (fr)
ES (1) ES2095279T3 (fr)
PT (1) PT99638B (fr)
RU (1) RU2078142C1 (fr)
SK (1) SK281276B6 (fr)
TR (1) TR25745A (fr)
ZA (1) ZA917786B (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996012045A1 (fr) * 1994-10-17 1996-04-25 Voest-Alpine Industrieanlagenbau Gmbh Procede et installation permettant de produire de la fonte brute et/ou du fer spongieux
WO1996012044A1 (fr) * 1994-10-17 1996-04-25 Voest-Alpine Industrieanlagenbau Gmbh Procede de production de fonte brute liquide ou d'ebauches en acier liquides et de fer spongieux, et installation de mise en ×uvre dudit procede
WO1996017089A1 (fr) * 1994-12-01 1996-06-06 Voest-Alpine Industrieanlagenbau Gmbh Procede et installation de production d'eponge de fer
WO1997007247A1 (fr) * 1995-08-16 1997-02-27 Voest-Alpine Industrieanlagenbau Gmbh Procede pour produire de la fonte brute liquide ou des produits de base en acier liquides et du fer spongieux, ainsi qu'installations pour sa mise en oeuvre
AU678509B2 (en) * 1990-11-29 1997-05-29 Voest-Alpine Industrieanlagenbau Gesellschaft Mbh Process for the production of pig iron and sponge iron
WO1997028284A1 (fr) * 1996-02-01 1997-08-07 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Procede et installation siderurgiques
WO1997033006A1 (fr) * 1996-03-05 1997-09-12 Voest-Alpine Industrieanlagenbau Gmbh Procede de production de fonte brute liquide ou de produits intermediaires liquides d'acier, et installation pour la mise en oeuvre de ce procede
AT405523B (de) * 1996-03-05 1999-09-27 Voest Alpine Ind Anlagen Verfahren zur herstellung von flüssigem roheisen und zumindest teilreduziertem nichteisen-erz sowie anlage zur durchführung des verfahrens
EP0969107A1 (fr) * 1992-10-22 2000-01-05 Voest Alpine Industrieanlagenbau Gmbh Procédé pour produire de la fonte brute liquide ou des produits d'acier préaffinés liquides et du fer chaud briquetté

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Publication number Priority date Publication date Assignee Title
AT404254B (de) * 1993-07-05 1998-10-27 Voest Alpine Ind Anlagen Verfahren und anlage zur herstellung von roheisen oder flüssigen stahlvorprodukten aus eisenerzhältigen einsatzstoffen
US5676732A (en) * 1995-09-15 1997-10-14 Hylsa, S.A. De C.V. Method for producing direct reduced iron utilizing a reducing gas with a high content of carbon monoxide
US5582029A (en) * 1995-10-04 1996-12-10 Air Products And Chemicals, Inc. Use of nitrogen from an air separation plant in carbon dioxide removal from a feed gas to a further process
UA42803C2 (uk) * 1995-10-10 2001-11-15 Фоест-Альпіне Індустріанлагенбау Гмбх Спосіб прямого відновлення дрібнозернистого матеріалу у формі часток, що містить оксид заліза, та установка для здійснення цього способу
AT403380B (de) 1996-03-05 1998-01-26 Voest Alpine Ind Anlagen Verfahren zum reduzieren von metallschwamm
AT405524B (de) 1996-03-05 1999-09-27 Voest Alpine Ind Anlagen Verfahren zur herstellung von flüssigem roheisen oder flüssigen stahlvorprodukten und metallschwamm
US6027545A (en) * 1998-02-20 2000-02-22 Hylsa, S.A. De C.V. Method and apparatus for producing direct reduced iron with improved reducing gas utilization
US6562103B2 (en) 2001-07-27 2003-05-13 Uop Llc Process for removal of carbon dioxide for use in producing direct reduced iron
US20050151307A1 (en) * 2003-09-30 2005-07-14 Ricardo Viramontes-Brown Method and apparatus for producing molten iron
UA82783C2 (uk) * 2006-12-04 2008-05-12 Анатолий Тимофеевич Неклеса Спосіб одержання залізовуглецевого розплаву, зокрема розплаву сталі
US8057734B2 (en) * 2009-02-24 2011-11-15 Praxair Technology, Inc. Producing metal and carbon dioxide with hydrogen recycle
AT508291B1 (de) * 2009-05-28 2011-07-15 Siemens Vai Metals Tech Gmbh Verfahren und vorrichtung zur reduktion oxidischer eisenträger mit reduktionsgas aus einem kohlevergaser
IT1402250B1 (it) 2010-09-29 2013-08-28 Danieli Off Mecc Procedimento ed apparato per la produzione di ferro di riduzione diretta utilizzando una sorgente di gas riducente comprendente idrogeno e monossido di carbonio
WO2012058717A1 (fr) * 2010-11-03 2012-05-10 Technological Resources Pty. Limited Production de fer
FI2895630T3 (en) * 2012-09-14 2023-08-15 Voestalpine Stahl Gmbh METHOD FOR STORING DISCONTINUOUSLY OBTAINED ENERGY IN IRON ORE REDUCTION PROCESS
EP2905345A1 (fr) * 2014-02-10 2015-08-12 Primetals Technologies Austria GmbH Chargement pneumatique de minerai
CN105066716B (zh) * 2015-07-28 2018-02-02 中国恩菲工程技术有限公司 还原炉余热回收利用的方法
CN111575428B (zh) * 2020-06-11 2023-05-09 武汉科思瑞迪科技有限公司 一种气固还原竖炉及生产海绵铁的方法

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AT389124B (de) * 1987-09-17 1989-10-25 Voest Alpine Ag Verfahren und anlage zur herstellung von fluessigem roheisen oder stahlvorprodukten aus stueckigen, eisenerzhaeltigen einsatzstoffen
MX170052B (es) * 1987-12-07 1993-08-05 Kawasaki Heavy Ind Ltd Metodo de reduccion por fundicion de menas que contienen oxidos de metal
DE4037977A1 (de) * 1990-11-29 1992-06-11 Voest Alpine Ind Anlagen Verfahren zur herstellung von roheisen bzw. eisenschwamm
US8380177B2 (en) 2010-04-09 2013-02-19 Paydiant, Inc. Mobile phone payment processing methods and systems
JP6013401B2 (ja) 2014-06-17 2016-10-25 中国電力株式会社 沈着状況調査方法

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU678509B2 (en) * 1990-11-29 1997-05-29 Voest-Alpine Industrieanlagenbau Gesellschaft Mbh Process for the production of pig iron and sponge iron
EP0969107A1 (fr) * 1992-10-22 2000-01-05 Voest Alpine Industrieanlagenbau Gmbh Procédé pour produire de la fonte brute liquide ou des produits d'acier préaffinés liquides et du fer chaud briquetté
WO1996012045A1 (fr) * 1994-10-17 1996-04-25 Voest-Alpine Industrieanlagenbau Gmbh Procede et installation permettant de produire de la fonte brute et/ou du fer spongieux
WO1996012044A1 (fr) * 1994-10-17 1996-04-25 Voest-Alpine Industrieanlagenbau Gmbh Procede de production de fonte brute liquide ou d'ebauches en acier liquides et de fer spongieux, et installation de mise en ×uvre dudit procede
RU2211865C2 (ru) * 1994-10-17 2003-09-10 Фоест-Альпине Индустрианлагенбау ГмбХ Установка для получения чугуна и/или губчатого железа и способ получения чугуна и/или губчатого железа
US5997608A (en) * 1994-10-17 1999-12-07 Voest-Alpine Industrieanlagenbau Gmbh Process for the production of molten pig iron or molten steel, pre-products and sponge iron and a plant for carrying out the process
US5989308A (en) * 1994-10-17 1999-11-23 Voest-Alpine Industriean-Lagenbau Gmbh Plant and process for the production of pig iron and/or sponge iron
EP0845541A3 (fr) * 1994-10-17 1998-11-04 Voest-Alpine Industrieanlagenbau Gmbh Installation et procédé pour la fabrication de fer et/ou fer spongieux
WO1996017089A1 (fr) * 1994-12-01 1996-06-06 Voest-Alpine Industrieanlagenbau Gmbh Procede et installation de production d'eponge de fer
US5997609A (en) * 1994-12-01 1999-12-07 Voest-Alpine Industrieanlagenbau Gmbh Sponge iron production process and plant
US5846268A (en) * 1995-08-16 1998-12-08 Voest-Alpine Industieanlagenbau Gmbh Process for producing liquid pig iron or liquid steel preproducts and sponge iron as well as a plant for carrying out the process
AU695747B2 (en) * 1995-08-16 1998-08-20 Voest-Alpine Industrieanlagenbau Gmbh A process for producing liquid pig iron or liquid steel preproducts and sponge iron as well as a plant for carrying out the process
WO1997007247A1 (fr) * 1995-08-16 1997-02-27 Voest-Alpine Industrieanlagenbau Gmbh Procede pour produire de la fonte brute liquide ou des produits de base en acier liquides et du fer spongieux, ainsi qu'installations pour sa mise en oeuvre
FR2744374A1 (fr) * 1996-02-01 1997-08-08 Air Liquide Procede et installation siderurgiques
WO1997028284A1 (fr) * 1996-02-01 1997-08-07 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Procede et installation siderurgiques
US6126717A (en) * 1996-02-01 2000-10-03 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Steel-making method and plant
AT405523B (de) * 1996-03-05 1999-09-27 Voest Alpine Ind Anlagen Verfahren zur herstellung von flüssigem roheisen und zumindest teilreduziertem nichteisen-erz sowie anlage zur durchführung des verfahrens
WO1997033006A1 (fr) * 1996-03-05 1997-09-12 Voest-Alpine Industrieanlagenbau Gmbh Procede de production de fonte brute liquide ou de produits intermediaires liquides d'acier, et installation pour la mise en oeuvre de ce procede
US6251162B1 (en) 1996-03-05 2001-06-26 Deutsche Voest-Alpine Industrieanlagenbau Gmbh Process for the production of liquid pig iron or liquid intermediate products of steel
CN1068631C (zh) * 1996-03-05 2001-07-18 奥地利钢铁联合企业阿尔帕工业设备制造公司 生产生铁水或钢水预产品的工艺和实施该工艺的设备

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ATE145432T1 (de) 1996-12-15
EP0487856A3 (en) 1993-02-03
SK281276B6 (sk) 2001-02-12
AU7419894A (en) 1994-12-08
CS363191A3 (en) 1992-06-17
DE4037977A1 (de) 1992-06-11
CZ278732B6 (en) 1994-05-18
ZA917786B (en) 1992-05-27
RU2078142C1 (ru) 1997-04-27
EP0487856B1 (fr) 1996-11-20
DE4037977C2 (fr) 1992-09-24
PT99638A (pt) 1992-11-30
KR0140516B1 (ko) 1998-07-15
BR9105177A (pt) 1992-07-21
DE59108365D1 (de) 1997-01-02
PT99638B (pt) 1999-05-31
JP2635256B2 (ja) 1997-07-30
ES2095279T3 (es) 1997-02-16
CA2052659C (fr) 2001-04-17
KR920009995A (ko) 1992-06-26
JPH04268008A (ja) 1992-09-24
TR25745A (tr) 1993-09-01
AU678509B2 (en) 1997-05-29
AU8584191A (en) 1992-06-04
US5238487A (en) 1993-08-24
CA2052659A1 (fr) 1992-05-30

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